BuyUKeSIM

BuyUKeSIM provides UK virtual phone numbers and eSIM data plans without KYC, enabling anonymous verification for services worldwide. Users can purchase a UK +44 number instantly via crypto, receive SMS or calls, and access travel data eSIMs covering 190+ countries. The platform emphasizes privacy, crypto payments, and instant QR activation, catering to travelers and privacy‑focused users.

BuyUKeSIM publishes 9 API contracts indexed on the APIs.io network, including Bundle Crypto Quote.php API, Crypto Quote.php API, Payment Methods.php API, and 6 more. Tagged areas include eSIM, Cryptocurrency, Privacy, Telecommunications, and Travel.

The BuyUKeSIM catalog on APIs.io includes 1 Spectral governance ruleset.

BuyUKeSIM’s developer surface includes authentication, signup flow, documentation, engineering blog, getting-started guide, API reference, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.4/100 thin Agent 28/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract

eSIM Cryptocurrency Privacy Telecommunications Travel

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 29.4/100 · thin

Contract Quality 8.3 / 21

Developer Ergonomics 5.5 / 17

Access Clarity 2.9 / 17

Operational Transparency 0.6 / 11

Contract Governance 1.9 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Telecommunications regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 17.1 — up to +16.6 composite points
Contract Quality scores 39.0 — up to +15.3 composite points
Developer Ergonomics scores 32.1 — up to +13.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/buyukesim-com/apis.yml: open an issue on github.com/api-evangelist/buyukesim-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (flavored)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

BuyUKeSIM Bundle Crypto Quote.php API

The Bundle Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for bundle crypto quote.php.

BuyUKeSIM Crypto Quote.php API

The Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for crypto quote.php.

BuyUKeSIM Payment Methods.php API

The Payment Methods.php API from BuyUKeSIM — 1 operation(s) for payment methods.php.

BuyUKeSIM Reviews List.php API

The Reviews List.php API from BuyUKeSIM — 1 operation(s) for reviews list.php.

BuyUKeSIM Topup Quote.php API

The Topup Quote.php API from BuyUKeSIM — 1 operation(s) for topup quote.php.

BuyUKeSIM Travel Crypto Quote.php API

The Travel Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for travel crypto quote.php.

BuyUKeSIM Travel Packages.php API

The Travel Packages.php API from BuyUKeSIM — 1 operation(s) for travel packages.php.

BuyUKeSIM Vpn Crypto Quote.php API

The Vpn Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for vpn crypto quote.php.

BuyUKeSIM Vpn Plans.php API

The Vpn Plans.php API from BuyUKeSIM — 1 operation(s) for vpn plans.php.

Scroll for all 9

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

BuyUKeSIM API Rules

23 rules · 21 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Buyukesim Com Authentication

2 schemes

SECURITY

Buyukesim Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Buyukesim Com Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Buyukesim Com Agentic Access

9 operations

9 operations · 0 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

SignUp

SignUp

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Idempotency

Conventions

Conformance

Access & Security 5

Authentication, authorization, and security posture

Authentication

Authentication

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: buyukesim-com
name: BuyUKeSIM
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://buyukesim.com/og-default.webp
description: BuyUKeSIM provides UK virtual phone numbers and eSIM data plans without KYC, enabling anonymous verification
  for services worldwide. Users can purchase a UK +44 number instantly via crypto, receive SMS or calls, and access travel
  data eSIMs covering 190+ countries. The platform emphasizes privacy, crypto payments, and instant QR activation, catering
  to travelers and privacy‑focused users.
url: https://artifacts.apis.io/buyukesim-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- eSIM
- Cryptocurrency
- Privacy
- Telecommunications
- Travel
tags_raw:
- eSIM
- Crypto
- Privacy
- Telecom
- Travel
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/buyukesim-com-agentic-access.yml
- type: Spectral
  url: rules/buyukesim-com-rules.yml
- type: Idempotency
  url: conventions/buyukesim-com-conventions.yml
- type: Conventions
  url: conventions/buyukesim-com-conventions.yml
- type: Authentication
  url: authentication/buyukesim-com-authentication.yml
- type: Conformance
  url: conformance/buyukesim-com-conformance.yml
- type: LLMsTxt
  url: llms/buyukesim-com-llms.txt
- type: AgentCard
  url: a2a/buyukesim-com-a2a.yml
- type: SecurityTxt
  url: well-known/buyukesim-com-security.txt
- type: WellKnown
  url: well-known/buyukesim-com-well-known.yml
- type: Hosts
  url: hosts/buyukesim-com-hosts.yml
- type: Vendors
  url: vendors/buyukesim-com-vendors.yml
- type: TermsOfService
  url: https://buyukesim.com/en/terms/
- type: SignUp
  url: https://buyukesim.com/en/sign-up-apps-that-block-voip-numbers/
- type: Security
  url: https://buyukesim.com/en/security/
- type: PrivacyPolicy
  url: https://buyukesim.com/en/privacy/
- type: Documentation
  url: https://buyukesim.com/en/affiliate/docs/
- type: DeveloperPortal
  url: https://buyukesim.com/en/developers/
- type: Blog
  url: https://buyukesim.com/en/blog/
- type: GettingStarted
  url: https://buyukesim.com/en/mcp-docs/
- type: APIReference
  url: https://buyukesim.com/llms.txt
- type: VulnerabilityDisclosure
  url: security/buyukesim-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/buyukesim-com-domain-security.yml
- type: Website
  url: https://buyukesim.com/
apis:
- aid: buyukesim-com:buyukesim-com-bundle-crypto-quote-php-api
  name: BuyUKeSIM Bundle Crypto Quote.php API
  description: The Bundle Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for bundle crypto quote.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Bundle Crypto Quote.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-bundle-crypto-quote-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-crypto-quote-php-api
  name: BuyUKeSIM Crypto Quote.php API
  description: The Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for crypto quote.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Crypto Quote.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-crypto-quote-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-payment-methods-php-api
  name: BuyUKeSIM Payment Methods.php API
  description: The Payment Methods.php API from BuyUKeSIM — 1 operation(s) for payment methods.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Payment Methods.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-payment-methods-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-reviews-list-php-api
  name: BuyUKeSIM Reviews List.php API
  description: The Reviews List.php API from BuyUKeSIM — 1 operation(s) for reviews list.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Reviews List.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-reviews-list-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-topup-quote-php-api
  name: BuyUKeSIM Topup Quote.php API
  description: The Topup Quote.php API from BuyUKeSIM — 1 operation(s) for topup quote.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Topup Quote.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-topup-quote-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-travel-crypto-quote-php-api
  name: BuyUKeSIM Travel Crypto Quote.php API
  description: The Travel Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for travel crypto quote.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Travel Crypto Quote.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-travel-crypto-quote-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-travel-packages-php-api
  name: BuyUKeSIM Travel Packages.php API
  description: The Travel Packages.php API from BuyUKeSIM — 1 operation(s) for travel packages.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Travel Packages.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-travel-packages-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-vpn-crypto-quote-php-api
  name: BuyUKeSIM Vpn Crypto Quote.php API
  description: The Vpn Crypto Quote.php API from BuyUKeSIM — 1 operation(s) for vpn crypto quote.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Vpn Crypto Quote.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-vpn-crypto-quote-php-api-openapi.yml
- aid: buyukesim-com:buyukesim-com-vpn-plans-php-api
  name: BuyUKeSIM Vpn Plans.php API
  description: The Vpn Plans.php API from BuyUKeSIM — 1 operation(s) for vpn plans.php.
  humanURL: https://buyukesim.com/en/developers/docs/
  baseURL: https://buyukesim.com/api
  tags:
  - Vpn Plans.php
  properties:
  - type: OpenAPI
    url: openapi/buyukesim-com-vpn-plans-php-api-openapi.yml
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

BuyUKeSIM API — frequently asked questions

Does BuyUKeSIM have an API?

Yes. APIs.io lists 9 APIs from BuyUKeSIM, including BuyUKeSIM Bundle Crypto Quote.php API, BuyUKeSIM Crypto Quote.php API and BuyUKeSIM Payment Methods.php API, and 6 more.

Is there an OpenAPI specification for the BuyUKeSIM API?

Yes. APIs.io indexes 9 OpenAPI specifications for BuyUKeSIM, each linked for download from this page.

How do I authenticate with the BuyUKeSIM API?

BuyUKeSIM uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Buyukesim Com Authentication.

Is the BuyUKeSIM API ready for AI agents?

BuyUKeSIM has a Kin Score of 29.4 out of 100 (thin) and an Agent Readiness score of 27.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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